Some videos no active playback in Whirligig player

some of my Blu-Ray format shifts run great in WhirligigVR after I set it up, but there are a handful of movies that show as "no active playback" even though like the ones that work were all dumped from the original Blu-Ray via MakeMKV.  This is frustrating the hell out of me.  All these movies use SVP4 in regular media players but Whirligig and DeoVR only allow some of my videos to use SV4 in VR

Please Assist.